(Topic ID: 14134)

Judge Dredd planet gearbox revealed


By Dawson

7 years ago



Topic Stats

  • 82 posts
  • 34 Pinsiders participating
  • Latest reply 3 years ago by Firebaall
  • Topic is favorited by 24 Pinsiders

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There are 82 posts in this topic. You are on page 2 of 2.
#51 4 years ago
Quoted from Dawson:

Hauling mishap , ?

Yeah, I figure I hit a few bumps pretty hard cruising at 100+ on the way back from Dallas to make a 7:30pm ballet with my wife. I should have strapped the head down in hindsight because I heard it rise and slam down once or twice. It was working fine when I tested it out, when I got it home it was kinda funky. I turned it off and started reseating the first connectors I saw, turned it back on and it was significantly better, but still has some waves when it gets to high motion frames.

#52 4 years ago

Transportation can kick the crap out of a pinball machine , it seems , at least in my experience ( which I have a not a lot of ) Dmd connections , maybe because of the high voltage ? Take your time removing the planet and it will work out ..

#53 4 years ago
Quoted from TrevixClemson:

Thank you for all the awesome replies! I will be removing it tonight

Did you end up taking your Deadworld apart and fixing it? If so what method did you use to repair it and do you have anything to share about your repair? I'm getting ready to do mine and feel I could use all the help and tips that I can get.

#54 4 years ago

One thing I will mention is that solder works great, but it is a bear to get that gear straight without a little wobble. It took a few times to get it right.

#55 4 years ago

Shortly after I reported that my silver solder solution was still working...it apparently gave way.
I plan to use my drill press, and insert roll pins.
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
ttp://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#56 4 years ago

I actually pumped the gearbox with graphite grease , not white litho grease..

I remember that my gearbox ran smoother and quieter than original , I did put a bunch of grease in there...

Good luck

Chris post some pics of your operation

Thanks

Tj

#57 4 years ago
Quoted from pindude80:

Did you end up taking your Deadworld apart and fixing it? If so what method did you use to repair it and do you have anything to share about your repair? I'm getting ready to do mine and feel I could use all the help and tips that I can get.

I actually have not had a chance to get into it. I removed a closet in my gameroom to add more space (about 6 feet in depth) and it ended up being much more... involved... than I had planned. I do construction for a living and it was still a bitch.

I ordered rubbers, superbands, spotlights, an LED strip and new balls that should be here by Friday and I will order a new ramp next payday (sucker is expensive at $250). I will have the gearbox out by this weekend and I'll take some pix of whatever route I decide to go. I have the rings off and bulbs out already. If the gearbox is not opened up I may send it off to that dude in new york for repair. If it has been opened I will probably pin everything together since I have all the tools (press, drill press, etc.) at my disposal.

#58 4 years ago

https://pinside.com/pinball/forum/topic/judge-dredd-deadworld-gearbox

I'm a fan of doing most things myself (this is a hobby after all for many - you're supposed to have fun doing this stuff) but this is one of those things that I'd be perfectly happy sending out to Steve for four reasons:

1 - he's fixed plenty of these things, knows exactly what needs to be done and fixes it right the first time.
2 - when he fixes it he also puts back the motor cover Williams left out for cost reasons, and will replace your electric motor as well if it is having problems.
3 - if you attempt the repair and it goes wrong, there's no guarantee that if you send it to Steve that he could then fix it. And remember, replacement Deadworld motors are unobtanium.
4 - swapping out the motor is such a PITA job that doing it a second time because of a failed repair is not my idea of fun. I've seen many posts from here and elsewhere of people whose repair job didn't hold that unless you possess the three "T's" (time, talent, tools) this is a job best left to someone that knows what they are doing.

HNY!

viperrwk

#59 4 years ago

I've been playing with my planet motor disabled since one of the gears stripped a couple months ago. Tonight or tomorrow I'm going to finally dig into this and send it out to Pinball Resource. Can the bracket that holds the rings and planet be removed from the top side so you can pull the main driveshaft out through the bottom?

#60 4 years ago

Yes, it can.
But you have to remove a lot of parts to get to that point.
Still, I'd recommend stripping it down to the bare motor and drive shaft. There are too many parts to ship/find/get lost.

I stripped one down yesterday. When I reassemble it, I'll take pics.
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#61 4 years ago

Concur with Chris here. Plus you have to strip it down to just the gearbox and motor anyway to send to Steve - that's all he wants, nothing more.

And as others have suggested don't cut or desolder the wires to the light board. Remove the pins from the connector at the bottom of the motor and pull the wires up through the shaft. That will make it *much* easier to reassemble when the time comes.

viperrwk

#62 4 years ago

Yeah I plan to strip it down to the gearbox I just thought it might be easier to do once it was out of the machine. Also the wires for the planet have already been cut under the playfield from when this unit was serviced before, so I planned to just undo the wire nuts and pull the lights up from the top.

#63 4 years ago

I fixed mine also using the pinning method. The picture is before I cut the pins flush. I learned that you use the same size drill bit as pin. I used an 1/8" pin and bit. Props and cudos to the original poster for starting this thread!

JD Deadworld Gear Repaired.jpg

#64 4 years ago

Is this top nut supposed to come off? Because mine is totally fused on and will not budge, if I try to apply any real torque to it the gears start to spin. Seems to be the only way to disassemble this thing but I'm not sure how to hold the shaft without damaging the threads.

DSC_0004.JPG
#65 4 years ago

Yes, that nut has to come off so the black shaft can be removed.

And, thanks for posting that picture. The exploded diagram in the manual isn't very accurate (or at least I'm doubtful that it's accurate) since some of the part numbers/names are clearly wrong. When I first disassembled the one I have, there was a "C Clip" on the shaft with your stuck nut, that was clipped onto the shaft between the two nuts in your picture. I see that it's not on yours.

Don't put so much pressure on the shaft that the gearbox gears turn. That may damage more gears.

You could get another 1/2" nut, identical to the one in the picture. Thread it on adjacent to the other 1/2" nut that holds the planet on, and tighten them together. Putting a wrench on those two locked together nuts would then let you turn the stuck nut. Hope that makes sense. You could also apply a little liquid wrench or balistrol (sp?). Be patient and let it sit for 30 minutes.
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#66 4 years ago

Yeah I hit it with some PB blaster and I'm going to go ask our machinist if he has any clever ways to hold that shaft, he always enjoys a challenge.

That clip was on mine, I just removed it already to get a better look at the bottom and make sure the threads weren't stretched or marred. I'd be happy to take any other pictures anyone needs while I have this apart. I disabled the diverter and crane so the game is still playable while I have this out, I'm in no real hurry to get it back in.

#67 4 years ago

He had a collet block I was able to use on the bottom to keep the shaft from spinning. Problem solved, thanks for your help.

2 months later
#68 4 years ago

I'm all in

image.jpg
#70 4 years ago

Ha I tough I came up with the roll pin idea... Just when you think your smart , there's always someone who has been there, and done that

8 months later
#71 3 years ago

Ive gotta thank all yall. I finally got around to fixing the gear and the pin method worked like a charm. Plus it was very easy with the correct tools.

#72 3 years ago

I'm getting ready to do another one this weekend.
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info

2 weeks later
#73 3 years ago

I have a few questions about this fix. I am not very handy with this type of thing but will have someone that is helping me.

Where do I get those pins, is there a certain size or length I should be looking for?

When I open the gearbox, how do I remove that specific shaft and gears, how is it held in place?

Should I clean up any old grease in there and re-grease it? If so, what should I use to clean them with and what type of grease should I put on it?

Thanks for any help!

#74 3 years ago
Quoted from ziz:

I have a few questions about this fix. I am not very handy with this type of thing but will have someone that is helping me.
Where do I get those pins, is there a certain size or length I should be looking for?

I picked up 1/8" pins from O'reilly's Autoparts. They were too long at 3/4", but it was easy to grind them down flush. I also used red locktite on the ends to ensure they never work loose.

Quoted from ziz:

When I open the gearbox, how do I remove that specific shaft and gears, how is it held in place?

The box is held together by rivets, which are easy to drill out and remove, once you open the box, the gears are on the shafts, which fit into small holders in the top and bottom casings. You just remove the parts one by one until you get that one out; I removed everything and cleaned it all very well with carb cleaner. After all the work was done, I greased each part individually with white high temp, extra long life gun grease. It is expensive stuff, but it works awesome.

Quoted from ziz:

Should I clean up any old grease in there and re-grease it? If so, what should I use to clean them with and what type of grease should I put on it?

See above.

Hope this helps some!

#75 3 years ago

Awesome man, exactly what I was looking for, thanks a lot!

#76 3 years ago

Just carefully organize what you take off the unit.
There are spacers that go to specific places. Pictures and notes are good.
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info

3 weeks later
#77 3 years ago

Hi all,
Mine is having a different issue (see photo).. Not sure yet how I'm going to approach this.
In the meantime, do you guys have any recommendation as to how to replace the rivets after they've been drilled out?
(Also on a side note, has anyone ever thought about a complete overhaul based on 1 or 2 stepper motors and a standalone controller? Fairly cheap nowadays?)

IMG_1922_(resized).jpg

#78 3 years ago

Run those screws in from the other side of the gear box.
You'll need to grind the perimeter of them down, and some of the top, so that it fits within the razed area. It will be apparent when you examine the other side.

Here's a pic.

BTW, I'm convinced that lack of lubrication (or congealed lubrication) on those gears in your picture is the general cause for the more common internal gearbox failure.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The new place for pinball repair info

image_(resized).jpeg

4 months later
#79 3 years ago

fixed mine last week successfully, adn i've got a working planet now^^

thanks for putting these infos online

4 months later
#80 3 years ago

Wait....

http://www.marcospecialties.com/pinball-parts/14-7985

New design they say? Has anybody tried these?

#81 3 years ago
Quoted from Firebaall:

Wait....
http://www.marcospecialties.com/pinball-parts/14-7985
New design they say? Has anybody tried these?

I was hoping the price on these would be closer to $200 so I wouldn't have to send mine to Steve's for a refurb... $369 is a little tough to justify

#82 3 years ago

The price is a bit high....

But I'm interested. I haven't gotten around to sending in my old gear boxes, and even purchased a used one from a fellow pinsider. It ended up being only so-so, and should be rebuilt before installing (which I only wanted to do once).

Now, I just can't seem to find any info on this new box that Marco is selling. Especially since they are making some interesting claims about improved durability. I would have thought there would have been a Pinside discussion thread on these new boxes, since it's kind of a big deal for JD owners.

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